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| Titel |
The 8 July 2002 storm over Athens: analysis of the Kifissos River/Canal overflows |
| VerfasserIn |
K. Mazi, A. D. Koussis |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: 7th Plinius Conference on Mediterranean Storms (2005) ; Nr. 7 (2006-04-18), S.301-306 |
| Datensatznummer |
250004308
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| Publikation (Nr.) |
 copernicus.org/adgeo-7-301-2006.pdf |
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| Zusammenfassung |
| We analyse the flood event of 8 July 2002 that caused overflows over
portions of the lower reach of the Kifissos River/Canal. The storm covered
only the lower basin area and was concentrated on the centre and the
southwest side of Greater Athens. The issue that stirred the public opinion
was whether the hydraulic works underway in lower Kifissos at that time were
responsible for the overflows. We explore this issue with the
hydrologic-hydraulic model of the Kifissos basin TELESIM. To shed light on
the probable cause of the observed flooding, we ran TELESIM for two
rain-field scenarios derived from the recorded point-rainfalls, computing
flows for each scenario. Depth profiles for channel conditions without
obstructions do not explain the observed flooding. With the channel taken as
locally obstructed by flow-area reducing ramps plus bed-debris, estimated
nominal overflows (bank-full level is threshold, but the water stays inside
the channel) compare well with actual ones for the milder rainfall scenario.
Hence, the simulations support as plausible the hypothesis that flow
obstructions due to the construction caused the overflows. |
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